/*
* Copyright (c) Microsoft Corporation. All rights reserved.
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file has been modified by Huawei to verify type inference by adding verification statements.
*/

// === tests/cases/conformance/es6/Symbols/symbolProperty22.ts ===
declare function AssertType(value:any, type:string):void;
interface I<T, U> {
    [Symbol.unscopables](x: T): U;
}

declare function foo<T, U>(p1: T, p2: I<T, U>): U;

foo("", { [Symbol.unscopables]: s => s.length });
AssertType(foo("", { [Symbol.unscopables]: s => s.length }), "number");
AssertType(foo, "<T, U>(T, I<T, U>) => U");
AssertType("", "string");
AssertType({ [Symbol.unscopables]: s => s.length }, "{ [Symbol.unscopables]: (string) => number; }");
AssertType([Symbol.unscopables], "(string) => number");
AssertType(Symbol.unscopables, "unique symbol");
AssertType(s => s.length, "(string) => number");
AssertType(s, "string");
AssertType(s.length, "number");


